Reduction of the antinociceptive effect of 5-hydroxytryptophan in morphine tolerant rats.
D006916:5-Hydroxytryptophan / Q000494:pharmacology*; D000698:Analgesia; D000818:Animals; D004357:Drug Synergism; D004361:Drug Tolerance; D004558:Electric Stimulation; D005260:Female; D009020:Morphine / Q000494:pharmacology*; D051381:Rats; D012701:Serotonin / Q000378:metabolism
D012701:Serotonin; D009020:Morphine; D006916:5-Hydroxytryptophan